Replacing a crank on a bicycle can be a daunting task, but it doesn’t have to be. If you have the right tools and a little bit of know-how, you can do it yourself and save some money. This guide will walk you through the process of replacing a crank on a bicycle, step-by-step.
Before you begin, make sure you have the right tools for the job. You will need a crank puller, a crank arm removal tool, a bottom bracket tool, and a set of Allen keys. You may also want to have a torque wrench on hand, just in case.
Step 1: Remove the Crank Arm
The first step is to remove the crank arm from the bike. Begin by loosening the bolt on the non-drive side of the crank arm. Once the bolt is loose, you can use the crank arm removal tool to remove the crank arm from the bike.
Step 2: Remove the Bottom Bracket
Once the crank arm is removed, you can now remove the bottom bracket. Use the bottom bracket tool to loosen the bottom bracket cups. Once the cups are loose, you can remove them from the bike.
Step 3: Install the New Crank Arm
Now it’s time to install the new crank arm. First, you will need to insert the crank arm into the bottom bracket. Make sure the crank arm is properly aligned with the bottom bracket. Once the crank arm is in place, use the Allen key to tighten the bolt on the non-drive side of the crank arm.
Step 4: Install the Bottom Bracket
Now you can reinstall the bottom bracket. Begin by inserting the bottom bracket cups into the frame. Then use the bottom bracket tool to tighten the cups. Make sure the cups are firmly tightened, but be careful not to over-tighten them.
Step 5: Check the Torque
Once the bottom bracket is installed, you can now check the torque on the crank arm. Use a torque wrench to make sure the crank arm is properly tightened. The torque should be between 30 and 35Nm.
Replacing a crank on a bicycle is not a difficult task, as long as you have the right tools and a bit of know-how. This guide should help you replace your crank with ease. Just remember to check the torque on the crank arm to ensure it is properly tightened.